# -*- coding: utf-8 -*-

#################################
# Torrent types implementations #
#################################

# Imports
from tubot.torrent.types import TorrentTypes
from tubot.torrent.abc import TorrentObj
from aiofiles import open, ospath
from magic import Magic
from re import match
from urllib.parse import urlparse


class TorrentFile(TorrentObj):
    """
    .torrent file
    """

    _ttype = TorrentTypes.File

    async def __validate__(self) -> bool:
        if await ospath.isfile(self.content):
            mime = Magic(mime=True).from_file(self.content)
            if mime == "application/x-bittorrent":
                return True
        return False

    async def getbytes(self) -> bytes:
        async with open(self.content, "rb") as dottorrent:
            return await dottorrent.read()


class TorrentMagnet(TorrentObj):
    """
    Torrent magnet link
    """

    _ttype = TorrentTypes.Magnet

    async def __validate__(self) -> bool:
        pattern = r"^magnet:\?xt=urn:btih:[a-fA-F0-9]{40}.*$"
        if match(pattern, self.content):
            return True
        return False


class TorrentURL(TorrentObj):
    """
    Http(s) link to .torrent file
    """

    _ttype = TorrentTypes.URL

    async def __validate__(self) -> bool:
        try:
            parse = urlparse(self.content)
            return all([parse.scheme, parse.netloc])
        except (TypeError, AttributeError):
            return False